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Finding the Fourth Proportional to 219,246.30, 328,869.45 and 79,019.10

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Solution

The fourth proportional to 219,246.30, 328,869.45 and 79,019.10 is: 118,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,246.30 : 328,869.45 = 79,019.10 : x
  2. Step 2: Convert to fraction form
    219,246.30/328,869.45 = 79,019.10/x
  3. Step 3: Cross multiply
    219,246.30x = 328,869.45 × 79,019.10
  4. Step 4: Simplify right side
    219,246.30x = 25,986,967,956.50
  5. Step 5: Solve for x
    x = 25,986,967,956.50/219,246.30
  6. Step 6: Final answer
    x = 118,528.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.